/* TaiQiDoc informational pages: About, Copyright, Contact and Websitemap. */
.tqi-page {
    width: 100%;
    max-width: 1120px;
    margin: 24px auto 64px;
    color: hsl(var(--ink-800));
    font-size: var(--fs-15);
    line-height: 1.85;
}

.tqi-hero {
    position: relative;
    overflow: hidden;
    padding: 42px 48px;
    border-radius: var(--r-lg);
    color: hsl(var(--surface));
    background:
        radial-gradient(500px 260px at 88% 4%, hsl(var(--accent-300) / .30), transparent 70%),
        linear-gradient(118deg, hsl(var(--brand-900)) 0%, hsl(var(--brand-700)) 54%, hsl(var(--brand-500)) 100%);
    box-shadow: 0 16px 38px -28px hsl(var(--brand-950) / .62);
}

.tqi-hero::after {
    position: absolute;
    right: -54px;
    bottom: -120px;
    width: 300px;
    height: 300px;
    border: 1px solid hsl(0 0% 100% / .14);
    border-radius: 50%;
    content: "";
    pointer-events: none;
}

.tqi-kicker {
    display: inline-block;
    margin-bottom: 8px;
    color: hsl(0 0% 100% / .72);
    font-size: var(--fs-12);
    font-weight: 700;
    letter-spacing: .16em;
    text-transform: uppercase;
}

.tqi-hero h1 {
    margin: 0;
    color: hsl(var(--surface));
    font-size: clamp(28px, 3vw, 38px);
    font-weight: 700;
    line-height: 1.3;
    letter-spacing: .03em;
}

.tqi-hero p {
    max-width: 760px;
    margin: 12px 0 0;
    color: hsl(0 0% 100% / .82);
    font-size: var(--fs-15);
}

.tqi-body {
    display: grid;
    gap: 20px;
    margin-top: 20px;
}

.tqi-card {
    padding: 28px 32px;
    border: 1px solid hsl(var(--line));
    border-radius: var(--r-lg);
    background: hsl(var(--surface));
    box-shadow: 0 10px 28px -20px hsl(var(--ink-900) / .24);
}

.tqi-section-title {
    display: flex;
    align-items: center;
    gap: 12px;
    margin: 0 0 16px;
    color: hsl(var(--ink-900));
    font-size: var(--fs-20);
    font-weight: 700;
    line-height: 1.45;
}

.tqi-section-title::before {
    width: 4px;
    height: 22px;
    flex: none;
    border-radius: var(--r-full);
    background: hsl(var(--brand-500));
    content: "";
}

.tqi-card p {
    margin: 0 0 12px;
    color: hsl(var(--ink-600));
}

.tqi-card p:last-child {
    margin-bottom: 0;
}

.tqi-card a,
.tqi-link {
    color: hsl(var(--brand-700));
    text-decoration: none;
}

.tqi-card a:hover,
.tqi-link:hover {
    color: hsl(var(--brand-500));
    text-decoration: underline;
}

.tqi-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.tqi-feature {
    min-height: 150px;
    padding: 22px 24px;
    border: 1px solid hsl(var(--line));
    border-radius: var(--r-md);
    background: linear-gradient(145deg, hsl(var(--surface)) 0%, hsl(var(--surface-muted)) 100%);
}

.tqi-feature h3 {
    margin: 0 0 8px;
    color: hsl(var(--ink-800));
    font-size: var(--fs-16);
    font-weight: 700;
}

.tqi-feature p {
    margin: 0;
    font-size: var(--fs-14);
}

.tqi-callout {
    padding: 18px 22px;
    border-left: 4px solid hsl(var(--brand-500));
    border-radius: 0 var(--r-md) var(--r-md) 0;
    color: hsl(var(--ink-600));
    background: hsl(var(--brand-50));
}

.tqi-actions {
    display: flex;
    flex-wrap: wrap;
    gap: 12px;
    margin-top: 18px;
}

.tqi-button {
    display: inline-flex;
    min-height: 42px;
    align-items: center;
    justify-content: center;
    padding: 0 18px;
    border: 1px solid hsl(var(--brand-600));
    border-radius: var(--r-full);
    color: hsl(var(--surface)) !important;
    background: hsl(var(--brand-600));
    font-size: var(--fs-14);
    font-weight: 700;
    text-decoration: none !important;
    transition: background-color var(--dur-fast) var(--ease-out), transform var(--dur-fast) var(--ease-out);
}

.tqi-button:hover {
    transform: translateY(-1px);
    color: hsl(var(--surface)) !important;
    background: hsl(var(--brand-700));
}

.tqi-button-secondary {
    color: hsl(var(--brand-700)) !important;
    background: hsl(var(--surface));
}

.tqi-button-secondary:hover {
    color: hsl(var(--brand-700)) !important;
    background: hsl(var(--brand-50));
}

.tqi-contact-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.tqi-contact-item {
    min-width: 0;
    padding: 22px;
    border: 1px solid hsl(var(--line));
    border-radius: var(--r-md);
    background: hsl(var(--surface-muted));
}

.tqi-contact-label {
    display: block;
    margin-bottom: 6px;
    color: hsl(var(--ink-500));
    font-size: var(--fs-13);
    font-weight: 600;
}

.tqi-contact-value {
    display: block;
    overflow-wrap: anywhere;
    color: hsl(var(--ink-900));
    font-size: var(--fs-16);
    font-weight: 700;
    line-height: 1.6;
}

.tqi-list {
    display: grid;
    gap: 10px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.tqi-list li {
    position: relative;
    padding-left: 22px;
    color: hsl(var(--ink-600));
}

.tqi-list li::before {
    position: absolute;
    top: .78em;
    left: 2px;
    width: 7px;
    height: 7px;
    border-radius: 50%;
    background: hsl(var(--brand-500));
    content: "";
}

.tqi-prose {
    display: grid;
    gap: 18px;
}

.tqi-prose section {
    padding-bottom: 18px;
    border-bottom: 1px solid hsl(var(--line));
}

.tqi-prose section:last-child {
    padding-bottom: 0;
    border-bottom: 0;
}

.tqi-prose h2 {
    margin: 0 0 8px;
    color: hsl(var(--ink-800));
    font-size: var(--fs-16);
    font-weight: 700;
}

.tqi-prose p {
    margin: 0 0 8px;
}

.tqi-prose p:last-child {
    margin-bottom: 0;
}

.tqi-sitemap-grid {
    display: grid;
    grid-template-columns: repeat(3, minmax(0, 1fr));
    gap: 16px;
}

.tqi-sitemap-group {
    min-width: 0;
    padding: 20px 22px;
    border: 1px solid hsl(var(--line));
    border-radius: var(--r-md);
    background: hsl(var(--surface));
}

.tqi-sitemap-group h3 {
    margin: 0 0 12px;
    padding-bottom: 10px;
    border-bottom: 1px solid hsl(var(--line));
    color: hsl(var(--ink-900));
    font-size: var(--fs-16);
    font-weight: 700;
}

.tqi-sitemap-group ul {
    display: grid;
    gap: 7px;
    margin: 0;
    padding: 0;
    list-style: none;
}

.tqi-sitemap-group li a {
    display: inline-block;
    color: hsl(var(--ink-600));
    text-decoration: none;
}

.tqi-sitemap-group li a:hover {
    color: hsl(var(--brand-700));
}

.tqi-small {
    color: hsl(var(--ink-500)) !important;
    font-size: var(--fs-13);
}

@media screen and (max-width: 900px) {
    .tqi-grid,
    .tqi-contact-grid,
    .tqi-sitemap-grid {
        grid-template-columns: repeat(2, minmax(0, 1fr));
    }
}

@media screen and (max-width: 640px) {
    .tqi-page {
        margin-top: 16px;
        margin-bottom: 36px;
    }

    .tqi-hero {
        padding: 28px 24px;
        border-radius: var(--r-md);
    }

    .tqi-card {
        padding: 22px 20px;
        border-radius: var(--r-md);
    }

    .tqi-grid,
    .tqi-contact-grid,
    .tqi-sitemap-grid {
        grid-template-columns: 1fr;
    }

    .tqi-feature {
        min-height: 0;
    }
}